Means for controlling the operation of elevators



(No ModeL) v G. H. REYNOLDS.

MEANS FOR CONTROLLING THE OPERATION OF ELEVATORS.

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UNITED STATES PATENT OFFICE.

GEORGE H. REYNOLDS, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF TO CRANE BROTHERS MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS.

MEANS FOR CONTROLLING THE OPERATION OF ELEVATORS.

SPECIFICATION forming-part of Letters Patent No. 317,202, dated May 5. 1385- Application filed January 5, 1885.

To all whom it may concern.-

Be it known that I, GEORGE H. REYNOLDS, of the city and county of New York, in the State of New York, have invented a new and useful Improvement in Means for Controlling the Operation of Elevators, of which the following is a specification.

My invention is applicable to the devices or hand-gear whereby the operation of the change or reversing valve in elevators is controlled by the attendant in the car or cab, and is applicable to hydraulic or steam elevators in which these devices are connected with and serve to shift the main change or reversing valve directly, and also to those hydraulic elevators in which the said devices are connected with an auxiliary or pilot valve, and by shifting the latter control the admission of water or other fluid to and its exhaust from a controlling cylinder or cylinders containing a piston or pistons, on which the water or liquid acts to move the main valve.

My invention relates to elevators in which the-movement of the valve is accomplished by shifting a lever or hand gear, which is arranged ou the car and which occupies a stationary position relatively to the car as the latter rises and falls.

The invention consists in novel combina- 0 tions of parts hereinafter described,and pointed out in the claims.

In the accompanying d rawings,Figure1 represents an elevation of an elevator car or cab, a

valve, and connections embodying my inventhe connections in a plane at right angles to in any well-known manner, but as these form no part of my invention they are omitted. The car or cab shown is supposed to be operated by hydraulic power, and D designates tion; and Fig. -2 is an elevation of certain of (No model.)

struction and mode of operation of this main 6o valve, its controlling-pistons, and pilot-valve and connections are fully described in my application for patent, Serial No. 147,253, filed November 6, 1884, and no further description thereof is here necessary. The lever-handle or hand-gear is here represented by a threearmed lever, d d (1*, which is here shown as fulcrumed at on the under side of the car A, but which may be wholly in the car. The arm d* forms the operating-handle and may be moved by hand along a sector bar or guide, e, in a well-understood manner. At the bot tom of the elevator-shaft is a beam or threearmed lever, f f f*, which has a stationary fulcrum, f, and from the arm f* of which the rod cextends to and is connected with the lever b, which controls the pilot-valve. In the ends of the lever-arms ff are pulleys g 9. At the top of the elevator-shaft, and, as here shown, hung from the same beams G, which support the sheave C, azepulleys or sheaves it.

E E designate two flexible connections, which may consist of wire ropes, cords, or other devices. The connection E is attached to one of the lever-arms d, is thence carried down under the pulley or sheaveg and upward to the top of the shaft, thence over the sheaves h and downward therefrom, a weight,

F, being suspended from its free end. The cord or connection E is attached to the other lever-arm d, is thence carried downward under the sheave g, thence upward to and over the sheaves h, and downward therefrom, and has a weight, F, suspended from its free end. The operation of these parts is very simple. 5 As the car rises,it pulls on the connections-E E, as indicated by the arrows, and so raises the weights F F, and as the car descends it pays out the connections and the weights de-. scend and always take up all slack in the connections. When the valve'is to be shifted,the handle-arm d* ismoved in one direction or the other, and by pulling on one or other connection Eor E raises one or other lever or beam arm f, and through the rod 0 shifts the lever 12 and valve-stem a. To insure the proper and reliable action of these parts, as described, it is only necessary that the weight F or)? shall be heavy enough to more than counterbalance the power required to move the pilot-. valve. As this power is small, the weights are not necessarily very heavy or cumbrous. Each weight may have a hole through it to receive the other connection, and thus form a guide to the weight. Abrasion of the connecticns may be prevented by placing a rubber ring or other soft material in the hole through the weight. The beam-arms ff formmovable bearings for the sheaves g g. Flat bands orstraps might be substituted for the cords or connections E-E.

What I claim as my invention, and desire to secure by Letters Patent, is

1. The combination,with the caror cab and its controlling-valve, of a lever or hand gear on the car or cab, and occupying a stationary position relatively thereto as it travels, sheaves g y, and bearings therefor arranged at the 'bottom of the shaft and adapted to move upmovement of the lever or hand gear on the car and the rising movement of one or other of the sheaves g y will effect the shifting of the valve, substantially as herein described.

- 2. The combination, with the car or cab, and its controlling valve, of a beam' fulcrumed at the bottom of the elevator-shaft, connected with said valve and provided with sheaves g g, sheaves h at the top of the elevator-shaft, a lever or hand gear occupying a stationary position on the car or cab as it travels, and fiexibleconnections attached at their one end to said lever or hand gear and thence passed downward under the sheaves g y, then upward 'over the sheaves h, and

weighted at their other end, substantially as herein described.

GEO. H. REYNOLDS. Witnesses:

G. HALL,- FREDK. HAYNES. 

